java - RecyclerView 内的分组开关

Question

我目前在尝试对 recyclerView 内的开关进行分组时遇到困难。我在下面附上了我的代码和屏幕快照。正如您所看到的，我现在可以切换任何开关，但在给定的时间点，我只想打开一个开关。

Item_list.xml:-

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout 
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:background="?android:attr/selectableItemBackground"
android:clickable="true"
android:focusable="true"
android:orientation="vertical"
android:paddingBottom="@dimen/row_padding_vertical"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/row_padding_vertical">


<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">

<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="87dp"
android:layout_marginLeft="30dp"
android:layout_marginTop="5dp"
android:layout_marginRight="30dp"
card_view:cardCornerRadius="8dp">

<LinearLayout
 android:layout_width="match_parent"
 android:layout_height="95dp"
 android:background="#20b2aa"
 android:orientation="vertical">

 <LinearLayout
 android:layout_width="182dp"
 android:layout_height="wrap_content"
 android:layout_marginLeft="30dp"
 android:layout_marginTop="20dp"
 android:layout_marginRight="30dp"
 android:orientation="horizontal">

 <TextView
 android:id="@+id/name"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:textColor="#ffff"
 android:textSize="32dp" />


 </LinearLayout>

 <Switch

 android:id="@+id/value"
 android:layout_width="59dp"
 android:layout_height="3dp"
 android:layout_marginLeft="190dp"
 android:layout_marginTop="-35dp"
 android:layout_marginBottom="100dp"
 android:scaleX="1.1"
 android:scaleY="1.1"
 android:theme="@style/SwitchTheme" />

 </LinearLayout>
 </androidx.cardview.widget.CardView>

 </LinearLayout>
 </RelativeLayout>

<小时/>

项目适配器:-

package com.example.loginpage;

import androidx.recyclerview.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Switch;
import android.widget.TextView;

import java.util.List;

public class ItemAdapter extends 
RecyclerView.Adapter<ItemAdapter.MyViewHolder> {

private int cn=0;
private List<Item> itemList;

public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView name;
public Switch value;

public MyViewHolder(View view) {
super(view)   
name = (TextView) view.findViewById(R.id.name);
value = (Switch) view.findViewById(R.id.value);
}
}

public ItemAdapter(List<Item> itemList) {
this.itemList = itemList;
}


@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int 
viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_list, parent, false);

return new MyViewHolder(itemView);
}

@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
Item item = itemList.get(position);
holder.name.setText(item.getName());
}

@Override
public int getItemCount() {
return itemList.size();
}

}

<小时/>

我当前的界面是这样的...... https://www.pastepic.xyz/image/8z5Eh

Answer 1

我建议您在所有值开关上设置一个点击监听器，并在单击任何开关时禁用所有开关。

@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
Item item = itemList.get(position);
 holder.name.setText(item.getName());
 holder.value.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        for (Item x: itemList){
          //  x.Selected=false; 
          // here you make all of your switches to false
        }
        //itm.Selected = true;
        // here you make the current switch to on or true
        notifyDataSetChanged();
    }
});
 }